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Crustal deformation in northwestern Arabia from GPS measurements in Syria: Slow slip rate along the northern Dead Sea Fault

Alchalbi, Abdlmutaleb; Daoud, Mohamad; Gomez, Francisco; McClusky, Simon; Reilinger, Robert; Romeyeh, Mohamad Abu; Alsouod, Adham; Yassminh, Rayan; Ballani, Basel; Darawcheh, Ryad; Sbeinati, Reda; Radwan, Youssef; Al Masri, Riad; Bayerly, Mazhar; Al Ghazzi, Riad; Barazangi, Muawia

Description

New Global Positioning System (GPS) measurements in NW Syria provide the first direct observations of near-field deformation associated with the northern Dead Sea fault system (DSFS) and demonstrate that the kinematics of the northern section of this transform plate boundary between the Arabian and Sinai plates deviate significantly from plate model predictions. Velocity estimates based on GPS survey campaigns in 2000, 2007 and 2008, demonstrate left-lateral shear along the northern DSFS with...[Show more]

dc.contributor.authorAlchalbi, Abdlmutaleb
dc.contributor.authorDaoud, Mohamad
dc.contributor.authorGomez, Francisco
dc.contributor.authorMcClusky, Simon
dc.contributor.authorReilinger, Robert
dc.contributor.authorRomeyeh, Mohamad Abu
dc.contributor.authorAlsouod, Adham
dc.contributor.authorYassminh, Rayan
dc.contributor.authorBallani, Basel
dc.contributor.authorDarawcheh, Ryad
dc.contributor.authorSbeinati, Reda
dc.contributor.authorRadwan, Youssef
dc.contributor.authorAl Masri, Riad
dc.contributor.authorBayerly, Mazhar
dc.contributor.authorAl Ghazzi, Riad
dc.contributor.authorBarazangi, Muawia
dc.date.accessioned2015-12-08T22:38:46Z
dc.identifier.issn0956-540X
dc.identifier.urihttp://hdl.handle.net/1885/35938
dc.description.abstractNew Global Positioning System (GPS) measurements in NW Syria provide the first direct observations of near-field deformation associated with the northern Dead Sea fault system (DSFS) and demonstrate that the kinematics of the northern section of this transform plate boundary between the Arabian and Sinai plates deviate significantly from plate model predictions. Velocity estimates based on GPS survey campaigns in 2000, 2007 and 2008, demonstrate left-lateral shear along the northern DSFS with 1σ uncertainties less than 0.7 mm yr-1. These velocities are consistent with an elastic dislocation model with a slip rate of 1.8-3.3 mm yr-1 and a locking depth of 5-16 km. This geodetically determined slip rate is about half of that reported farther south along the central section (Lebanese restraining bend) and the southern section (Jordan Valley and Wadi Araba) of the transform and consequently requires some deformation to occur away from the transform along other geological structures. The factor of two difference in slip rates along the transform is also consistent with differing estimates of total fault slip that have occurred since the mid Miocene: 20-25 km along the northern DSFS (in NW Syria) versus about 45 km along the southern DSFS segment. Some of the strain deficit may be accommodated by north-south shortening within the southwestern segment of the Palmyride fold belt of central Syria. Additionally, a distinct change in velocity occurs within the Sinai plate itself. These new GPS measurements, when viewed alongside the palaeoseismic record and the modest level of present-day seismicity, suggest that the reported estimates of recurrence time of large earthquakes (M > 7) along the northern section of the DSFS may be underestimated owing to temporal clustering of such large historical earthquakes. Hence, a revised estimate of the earthquake hazard may be needed for NW Syria.
dc.publisherBlackwell Publishing Ltd
dc.sourceGeophysical Journal International
dc.subjectKeywords: crustal deformation; geodesy; GPS; hazard assessment; kinematics; neotectonics; numerical model; paleoseismicity; plate boundary; slip rate; strike-slip fault; tectonic plate; transform fault; Asia; Dead Sea; Jordan Valley; Wadi Araba Asia; Continental tectonics: strike-slip and transform; Kinematics of crustal and mantle deformation; Neotectonics; Space geodetic surveys
dc.titleCrustal deformation in northwestern Arabia from GPS measurements in Syria: Slow slip rate along the northern Dead Sea Fault
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume180
dc.date.issued2010
local.identifier.absfor040402 - Geodynamics
local.identifier.ariespublicationu4278572xPUB130
local.type.statusPublished Version
local.contributor.affiliationAlchalbi, Abdlmutaleb, Syrian National Earthquake Centre
local.contributor.affiliationDaoud, Mohamad, Syrian National Earthquake Centre
local.contributor.affiliationGomez, Francisco, University of Missouri
local.contributor.affiliationMcClusky, Simon, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationReilinger, Robert, Massachusetts Institute of Technology
local.contributor.affiliationRomeyeh, Mohamad Abu, Syrian National Earthquake Centre
local.contributor.affiliationAlsouod, Adham, Syrian National Earthquake Centre
local.contributor.affiliationYassminh, Rayan, Syrian National Earthquake Centre
local.contributor.affiliationBallani, Basel, Syrian National Earthquake Centre
local.contributor.affiliationDarawcheh, Ryad, Syrian Atomic Energy Commission
local.contributor.affiliationSbeinati, Reda, Syrian Atomic Energy Commission
local.contributor.affiliationRadwan, Youssef, Syrian Atomic Energy Commission
local.contributor.affiliationAl Masri, Riad, Damascus University
local.contributor.affiliationBayerly, Mazhar, Tishreen University
local.contributor.affiliationAl Ghazzi, Riad, Syrian Virtual University
local.contributor.affiliationBarazangi, Muawia, Cornell University
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage125
local.bibliographicCitation.lastpage135
local.identifier.doi10.1111/j.1365-246X.2009.04431.x
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2016-02-24T10:48:22Z
local.identifier.scopusID2-s2.0-73049100598
local.identifier.thomsonID000272885200009
CollectionsANU Research Publications

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